Oil filtering and lubricating system



25, 1931- L. B.- ELLIS 1,820,382

OIL FILTERING AND LUBRICATING SYSTEM Filed April 2, 1928 2 Sheets-Sheet 1 :2 7 ,Grc'hwac fi 5/1914 Aug. 25, 1931. L. B. ELLIS 1,820,382

7 OIL FILTERING AND. LUBRIGATING SYSTEM Filed April 2, 1928 2 Sheets-Sheet 2 [Zchwm 43 Z [/15 Patented Aug..25, 19 31- 7 UNITED STATES? LOCKWOOD nELLIs, or DETROIT,MIcmeAmIAssiGNonlTo stunner. Morons coupe-- neuron, F DETROIT, MICHIGAN,

1e c re i s sbr DELAWARE.

[our surname Aim tonnroa'rme [SYSTEM Application filed. April 2,

ing oil to thebearings so that theirinlets face down stream so thatthe oil entering the lo'bra-nches must make areverse turn. The

foreign particles continue past the inlet because oftheir much greater inertia.

In lubricatingsystems provided with an oil filter this same principle may be availed of 15 to direct the dirt laden oil to the filter. In

this case the inlet to the; branch" line to the filter is arranged toface upstream so that it receives the oil, dirt and all. If preferred,

the same result may be'accomplished simply 0 by connecting the filter directly atthe end of the pressure line. p p

Obviously'the two uses ofthe principle involved in this invention maybe combined. The system may include branches leading to the bearings having inlets facing down steam and the branch leading to the filter facing up stream. 7 I

Figure 1 is a section throughaportion of an engine equipped with my improved lubri eating system. I p w Figure 2 is a section on line 2 -2 of Fig urel. A V v r K Figure 3 is a perspective view showing one of the fittings used'in Figures land 2.

Figures 4 and 5 are views similarto Figure 2 but showing modified arrangements 1 Referring to theform of the device shown in Figures 1 to 3, indicates the crank case of an internal combustion engine. and the oil pan which serves as a reservoir for lubricant. A screen 12 is preferably provided. be tween the crank case proper and the oil panso that the dirt is to some extent prevented from getting into the pan. 13 indicates the usual motor driven oil pump receiving its supply from' the reservoir through intake 14' and forcing the oilupwardly through conduit 16- to the oil distributing conduit 18-. f

From the distributing line'18, branches 2O bu t I an lead to the engine bearings. I have shown 1928. "serial No; 266,653.

each of these branches equipped with a nlinlet fittnig 22 onezof which is shown enlarged ina-Figure 3; *This'fitting is provided with a longitudinal OreQ-eLregiStering with the branch line, and with a transverse bore 26 invtersecting the'longitudinalbore and opening nto the distributing line. The transverse bores. face downstream as shown, so that the 1 oil entering them must turn back up'on itself. The foreign particles, because of their :greater inertia,-'continue"on; i J I I have also-shown a branch 28 leading to i oil filter 30.. Thissbranch" is equipped a fitting 22 like that shown in Figure 5,

upstreamso that dirt as well as oil 'enters the line leading to the filter. i V

'In' the form shownin Figure Q'Qthe endof the distributingg" line is equipped witha pressure relief'valve 32. Atzordinary speeds the,

pressure relief valve is-open sothat there is continuous flow'ofofl through the distrib uting line and'througli the valve back into the crankcase. i I v I'have shown a slightly different form of fit in Figure 4:. This consists simply of bearings faces downstream and that forthe filter faces up streamasin the; preceding formf I The advantages ofmy invention are obvious. The system "provides, in effect an and a sel ction of dirty oil for the filter. I It aifords a valuable auxiliary to a pressure operatecL-iiilter equipped. lubricating system. I claim: v 1. In a lubricating system includingparts to be lubricated, the combination of anoil pressure'line, and meansfor forcing oil under pressure through'said line and a branch line connected to said pressure line forcon I ducting oil to oneof said parts and having its inlet facing down stream so that foreign parin "this case the'transverse bore '26 faces Ihave shown a slight modifica- Li -shaped pipe 34 The fitting for the initial selection of clean oil for the bearings,

ticles are carried past the inlet by virtue of their greater inertia. I

2. In a lubricating system including parts to be lubricated, the combination of an oil pressure line, and a branch line for conducting oil to said bearings having its inlet facing downstream so that foreign particles are carried past by virtue of their greater inertia, an oil filter, and a line leading to said oil filter, said line having its inlet facing upstream so that foreign particles are diverted to the filter.

3. In a lubricating system for internal combustion engines having an oil reservoir,

parts to be lubricated, an oil filter and a conduit for the return of clean oil from the filter to the reservoir, the combination of a pressure line for supplying oil from the reservoir to said parts, a line connecting said filter with said pressure line, saidlast named line having its inlet facing the direction of flow in said pressure line so that foreign particles are diverted to the filter, and a conduit for returning oil to the reservoir communicating with the pressure line beyond its point of connection with said filter line in the direction of oilfiow. V

4. In a lubricating system the combination of an oil pressure line provided With an intersecting transverse bore, a branch line communicating with said bore at one side thereof, and a fitting projecting into the pressure line from the opposite side of the bore, said fitting having a longitudinal bore aligning with said branch line and a transverse passage establishing communication between the branch line and the pressure line at one side of said longitudinal bore.

5. In a lubricating system including an oil reservoir and parts to be lubricated, the combination of an oil pressure line for conduct ing lubricant from the reservoir to the parts, said line including a conduit provided with a plurality of intersecting transverse bores, branch lines communicating With said bores at one side thereof, and a plurality of fittings projecting into the conduit from the opposite sides of the bores, each of said fittings having a longitudinal bore aligning With the corresponding branch line and a transverse passage establishing communication between the branch line and the conduit, said transverse passage facing downstream so that f0r- I eign particles are carried past the inlet by virtue of their greater inertia. I

In testimony whereof I affix my signature.

LOCKVOOD B. ELLIS. 

